115541840917 has 2 divisors, whose sum is σ = 115541840918. Its totient is φ = 115541840916.

The previous prime is 115541840873. The next prime is 115541841029. The reversal of 115541840917 is 719048145511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102343047921 + 13198792996 = 319911^2 + 114886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115541840917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115541840717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57770920458 + 57770920459.

It is an arithmetic number, because the mean of its divisors is an integer number (57770920459).

Almost surely, 2^115541840917 is an apocalyptic number.

It is an amenable number.

115541840917 is a deficient number, since it is larger than the sum of its proper divisors (1).

115541840917 is an equidigital number, since it uses as much as digits as its factorization.

115541840917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 46.

The spelling of 115541840917 in words is "one hundred fifteen billion, five hundred forty-one million, eight hundred forty thousand, nine hundred seventeen".